a Series of "DIY" Step puzzle from the Russian brand Step - this is the original scientifically-educational kits-the designers, which is interesting to work both boys and girls.
Designed for young engineers from 8 years, sets, people familiar with the principles of electricity, optics, physics, microcosm, etc. the Guys learn about scientific phenomena in practice, collecting the designer, who later is very entertaining to use.
Each set of the series "DIY" Step puzzle is accompanied by detailed Assembly instructions. Provides practical advice and guidance on the operation of the product after Assembly.